223429993 has 2 divisors, whose sum is σ = 223429994. Its totient is φ = 223429992.

The previous prime is 223429937. The next prime is 223430003. The reversal of 223429993 is 399924322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193432464 + 29997529 = 13908^2 + 5477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223429993 is a prime.

It is not a weakly prime, because it can be changed into another prime (223429903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111714996 + 111714997.

It is an arithmetic number, because the mean of its divisors is an integer number (111714997).

Almost surely, 2^223429993 is an apocalyptic number.

It is an amenable number.

223429993 is a deficient number, since it is larger than the sum of its proper divisors (1).

223429993 is an equidigital number, since it uses as much as digits as its factorization.

223429993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The square root of 223429993 is about 14947.5748200168. The cubic root of 223429993 is about 606.8022148448.

It can be divided in two parts, 223429 and 993, that added together give a palindrome (224422).

The spelling of 223429993 in words is "two hundred twenty-three million, four hundred twenty-nine thousand, nine hundred ninety-three".